﻿<blockquote class="extDef">
NOTE&nbsp; Definition according to ISO/CD 10303-41:1992<br>
A derived unit is an expression of units.</blockquote>

<blockquote class="example">
EXAMPLE&nbsp; Newton per square millimetre is a derived unit.
</blockquote>

<blockquote class="note">
NOTE&nbsp; Corresponding ISO 10303 name: derived_unit, please refer to ISO/IS 10303-41 for the final definition of the formal standard.
</blockquote>

<blockquote class="history">
HISTORY&nbsp; New entity in IFC1.5.1.
</blockquote>